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<div class="title">OneInstructionPerCStepScheduler.cs</div>  </div>
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<div class="contents">
<a href="_one_instruction_per_c_step_scheduler_8cs.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;</div>
<div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;<span class="keyword">using</span> System;</div>
<div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;<span class="keyword">using</span> System.Collections.Generic;</div>
<div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;<span class="keyword">using</span> System.Diagnostics;</div>
<div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;<span class="keyword">using</span> System.Diagnostics.Contracts;</div>
<div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;<span class="keyword">using</span> System.Linq;</div>
<div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;<span class="keyword">using</span> System.Text;</div>
<div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;<span class="keyword">using</span> SystemSharp.Analysis;</div>
<div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;<span class="keyword">using</span> SystemSharp.Collections;</div>
<div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;<span class="keyword">using</span> SystemSharp.TreeAlgorithms;</div>
<div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;</div>
<div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;<span class="keyword">namespace </span>SystemSharp.SchedulingAlgorithms</div>
<div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;{</div>
<div class="line"><a name="l00037"></a><span class="lineno"><a class="line" href="class_system_sharp_1_1_scheduling_algorithms_1_1_one_instruction_per_c_step_scheduler.html">   37</a></span>&#160;    <span class="keyword">public</span> <span class="keyword">class </span><a class="code" href="class_system_sharp_1_1_scheduling_algorithms_1_1_one_instruction_per_c_step_scheduler.html">OneInstructionPerCStepScheduler</a> :</div>
<div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;        <a class="code" href="interface_system_sharp_1_1_scheduling_algorithms_1_1_i_basic_block_scheduling_algorithm.html">IBasicBlockSchedulingAlgorithm</a></div>
<div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;    {</div>
<div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;        <span class="keyword">private</span> <a class="code" href="class_system_sharp_1_1_scheduling_algorithms_1_1_one_instruction_per_c_step_scheduler.html">OneInstructionPerCStepScheduler</a>()</div>
<div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;        {</div>
<div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;        }</div>
<div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;</div>
<div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;        <span class="keyword">internal</span> <span class="keyword">static</span> <span class="keywordtype">void</span> CheckInput&lt;T&gt;(<a class="code" href="interface_system_sharp_1_1_scheduling_algorithms_1_1_i_scheduling_adapter_3_01_t_01_4.html">ISchedulingAdapter&lt;T&gt;</a> a, IList&lt;T&gt; instructions)</div>
<div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;        {</div>
<div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;            Contract.Requires&lt;ArgumentNullException&gt;(a != null);</div>
<div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;            Contract.Requires&lt;ArgumentNullException&gt;(instructions != null);</div>
<div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;</div>
<div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;            <span class="keywordflow">if</span> (instructions.Any())</div>
<div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;            {</div>
<div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;                T first = instructions.First();</div>
<div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;                <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; instructions.Count; i++)</div>
<div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;                {</div>
<div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;                    T instr = instructions[i];</div>
<div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;                    Debug.Assert(a.Preds[instr].All(pred =&gt; instructions.Contains(pred.Task)));</div>
<div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;                    Debug.Assert(a.Succs[instr].All(succ =&gt; instructions.Contains(succ.Task)));</div>
<div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;                }</div>
<div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;            }</div>
<div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;        }</div>
<div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;</div>
<div class="line"><a name="l00061"></a><span class="lineno"><a class="line" href="class_system_sharp_1_1_scheduling_algorithms_1_1_one_instruction_per_c_step_scheduler.html#a2c0729b909f779656ffafb04e1161228">   61</a></span>&#160;        <span class="keyword">public</span> <span class="keywordtype">long</span> Schedule&lt;T&gt;(<a class="code" href="interface_system_sharp_1_1_scheduling_algorithms_1_1_i_scheduling_adapter_3_01_t_01_4.html">ISchedulingAdapter&lt;T&gt;</a> a, IList&lt;T&gt; nodes, IList&lt;T&gt; startNodes, <span class="keywordtype">long</span> startTime)</div>
<div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;        {</div>
<div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;            CheckInput(a, nodes);</div>
<div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;</div>
<div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;            <span class="keywordflow">foreach</span> (T x <span class="keywordflow">in</span> nodes)</div>
<div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;            {</div>
<div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;                a.CStep[x] = long.MinValue;</div>
<div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;            }</div>
<div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;</div>
<div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;            <span class="keywordtype">long</span> curTime = startTime;</div>
<div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;            <span class="keywordflow">foreach</span> (T node <span class="keywordflow">in</span> nodes)</div>
<div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;            {</div>
<div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;                var preds = a.Preds[node];</div>
<div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;                <span class="keywordtype">long</span> time = curTime;</div>
<div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;                <span class="keywordflow">if</span> (preds.Length &gt; 0)</div>
<div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;                    time = Math.Max(time, preds.Max(p =&gt; a.CStep[p.Task] + p.MinDelay));</div>
<div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;                <span class="keywordflow">if</span> (preds.Any(p =&gt; time - a.CStep[p.Task] &gt; p.MaxDelay))</div>
<div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;                    <span class="keywordflow">throw</span> <span class="keyword">new</span> <a class="code" href="class_system_sharp_1_1_scheduling_algorithms_1_1_not_schedulable_exception.html">NotSchedulableException</a>();</div>
<div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;                a.CStep[node] = time;</div>
<div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;                curTime = time + 1;</div>
<div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;            }</div>
<div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;</div>
<div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;            <span class="keywordflow">return</span> curTime;</div>
<div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;        }</div>
<div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;</div>
<div class="line"><a name="l00086"></a><span class="lineno"><a class="line" href="class_system_sharp_1_1_scheduling_algorithms_1_1_one_instruction_per_c_step_scheduler.html#afb6cc80cf17e7ce78ed30032a6909a56">   86</a></span>&#160;        <span class="keyword">public</span> List&lt;long&gt; Schedule&lt;T&gt;(<a class="code" href="interface_system_sharp_1_1_scheduling_algorithms_1_1_i_scheduling_adapter_3_01_t_01_4.html">ISchedulingAdapter&lt;T&gt;</a> a, IEnumerable&lt;IList&lt;T&gt;&gt; blocks)</div>
<div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;        {</div>
<div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;            <span class="keywordtype">long</span> time = 0;</div>
<div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;            var times = <span class="keyword">new</span> List&lt;long&gt;();</div>
<div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;            <span class="keywordflow">foreach</span> (IList&lt;T&gt; block <span class="keywordflow">in</span> blocks)</div>
<div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;            {</div>
<div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;                times.Add(time);</div>
<div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;                time = Schedule(a, block, block, time);</div>
<div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160;            }</div>
<div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;            times.Add(time);</div>
<div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;            <span class="keywordflow">return</span> times;</div>
<div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160;        }</div>
<div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160;</div>
<div class="line"><a name="l00099"></a><span class="lineno"><a class="line" href="class_system_sharp_1_1_scheduling_algorithms_1_1_one_instruction_per_c_step_scheduler.html#a902a08cfa461eddc9adc6fa403dc42c5">   99</a></span>&#160;        <span class="keyword">public</span> <span class="keywordtype">void</span> Schedule&lt;T&gt;(IEnumerable&lt;T&gt; tasks, <a class="code" href="interface_system_sharp_1_1_scheduling_algorithms_1_1_i_scheduling_adapter_3_01_t_01_4.html">ISchedulingAdapter&lt;T&gt;</a> scha, <a class="code" href="class_system_sharp_1_1_scheduling_algorithms_1_1_scheduling_constraints.html">SchedulingConstraints</a> constraints)</div>
<div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160;        {</div>
<div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;            var nodes = tasks.ToList();</div>
<div class="line"><a name="l00102"></a><span class="lineno">  102</span>&#160;            constraints.EndTime = Schedule(scha, nodes, nodes, constraints.StartTime);</div>
<div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160;        }</div>
<div class="line"><a name="l00104"></a><span class="lineno">  104</span>&#160;</div>
<div class="line"><a name="l00108"></a><span class="lineno"><a class="line" href="class_system_sharp_1_1_scheduling_algorithms_1_1_one_instruction_per_c_step_scheduler.html#a8925c0b7e10cee1c1b1f94276a90b996">  108</a></span>&#160;        <span class="keyword">public</span> <span class="keyword">static</span> readonly <a class="code" href="class_system_sharp_1_1_scheduling_algorithms_1_1_one_instruction_per_c_step_scheduler.html">OneInstructionPerCStepScheduler</a> Instance = <span class="keyword">new</span> <a class="code" href="class_system_sharp_1_1_scheduling_algorithms_1_1_one_instruction_per_c_step_scheduler.html">OneInstructionPerCStepScheduler</a>();</div>
<div class="line"><a name="l00109"></a><span class="lineno">  109</span>&#160;    }</div>
<div class="line"><a name="l00110"></a><span class="lineno">  110</span>&#160;}</div>
<div class="ttc" id="class_system_sharp_1_1_scheduling_algorithms_1_1_scheduling_constraints_html"><div class="ttname"><a href="class_system_sharp_1_1_scheduling_algorithms_1_1_scheduling_constraints.html">SystemSharp.SchedulingAlgorithms.SchedulingConstraints</a></div><div class="ttdoc">Provides requirements and hints to the scheduling algorithm. </div><div class="ttdef"><b>Definition:</b> <a href="_interfaces_8cs_source.html#l00259">Interfaces.cs:259</a></div></div>
<div class="ttc" id="class_system_sharp_1_1_scheduling_algorithms_1_1_one_instruction_per_c_step_scheduler_html"><div class="ttname"><a href="class_system_sharp_1_1_scheduling_algorithms_1_1_one_instruction_per_c_step_scheduler.html">SystemSharp.SchedulingAlgorithms.OneInstructionPerCStepScheduler</a></div><div class="ttdoc">Trivial basic block scheduling algorithms which schedules all operations strictly sequentially...</div><div class="ttdef"><b>Definition:</b> <a href="_one_instruction_per_c_step_scheduler_8cs_source.html#l00037">OneInstructionPerCStepScheduler.cs:37</a></div></div>
<div class="ttc" id="interface_system_sharp_1_1_scheduling_algorithms_1_1_i_scheduling_adapter_3_01_t_01_4_html"><div class="ttname"><a href="interface_system_sharp_1_1_scheduling_algorithms_1_1_i_scheduling_adapter_3_01_t_01_4.html">SystemSharp.SchedulingAlgorithms.ISchedulingAdapter&lt; T &gt;</a></div><div class="ttdoc">A scheduling adapter is used to extract the scheduling-relevant properties from any type of operation...</div><div class="ttdef"><b>Definition:</b> <a href="_interfaces_8cs_source.html#l00098">Interfaces.cs:98</a></div></div>
<div class="ttc" id="interface_system_sharp_1_1_scheduling_algorithms_1_1_i_basic_block_scheduling_algorithm_html"><div class="ttname"><a href="interface_system_sharp_1_1_scheduling_algorithms_1_1_i_basic_block_scheduling_algorithm.html">SystemSharp.SchedulingAlgorithms.IBasicBlockSchedulingAlgorithm</a></div><div class="ttdoc">Interface of a scheduling algorithm at the basic block level. </div><div class="ttdef"><b>Definition:</b> <a href="_interfaces_8cs_source.html#l00301">Interfaces.cs:301</a></div></div>
<div class="ttc" id="class_system_sharp_1_1_scheduling_algorithms_1_1_not_schedulable_exception_html"><div class="ttname"><a href="class_system_sharp_1_1_scheduling_algorithms_1_1_not_schedulable_exception.html">SystemSharp.SchedulingAlgorithms.NotSchedulableException</a></div><div class="ttdoc">The scheduling algorithm failed because there is no feasible schedule under the given constraints...</div><div class="ttdef"><b>Definition:</b> <a href="_basic_scheduling_algorithms_8cs_source.html#l00110">BasicSchedulingAlgorithms.cs:110</a></div></div>
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